1. Middleware for Campus Grids Steven Newhouse, ETF Chair (& Deputy Director, OMII)

2. © Which Grid Middleware? gLite (EGEE) OMII GT4 UnitedDevices GridSystems CROWN ….

3. © What are your requirements? Research vs. supporting research Bleeding edge vs. production Your potential user community: ‘Intelligence’ Pain threshold Upfront cost vs. medium/long term costs

4. © ETF: Historical Role Started September 2001 Technical forum to build the UK Grid: GSC DTI/EPSRC Regional Centres Working Groups in 10+ areas Achievements: Established UK expertise Level 1 Grid: Basic compute/file grid Level 2 Grid: L1 + Application users

5. © ETF: Current Activities Integrated with GOSC 0.5 FTE from each regional centre Total 4 FTEs over ~12 people Leverage wider expertise within the community Evaluating software for production deployment Continue plenary meetings Focussed short–term ‘action lines’ Evaluation Criteria

6. © ‘Standard’ Evaluation Criteria Collect the same information Try and answer the same questions Focus on: General Background Information Systems Management User’s Experience Developer’s Experience Technical Relate to NGS environment

7. © ETF: In context OMII ETF NGS Distribution Other Software Services Prototypes & Specifications Software with proven capability & realistic deployment experience Feedback & future requirements EGEE Services

8. © ETF: Broader context UK Campus and other Grids NGS Operations Provider requirements GOSC Board User requirements ETF Software providers Software providers Software providers

9. © Secured Condor Pool Authorised Condor Flocking Use GSI to control access to daemons Flocking through firewalls

10. © UDDI Explore use of UDDI v2 Replication of registry No support at UDDI level Very hard to do at the database level Poor support for provenance & meta-data Grimoires from OMII to address some issues

11. © GridSystems Commercial product InnerGrid: Within the firewall OuterGrid: Between systems (not evaluated) Use of Tomcat/Axis as server Agents represent resources Modules represent applications Tasks represent modules running on agents

12. © GT4 Major new release of the Globus Toolkit Implementation of WSRF Improved GridFTP Improved WS-GRAM w.r.t. GT3.x Straightforward portable source & binary installers High quality structured documentation for installation & development Pure Java code OK on both Linux and Windows

13. © GT4 Components

14. © GT4 Migration From GT3: A few straight forward changes to service interfaces. Improved service performance & reliability From GT2.4: Pre WS components interoperate

15. © GT4 Issues No migration guide for GT2 developers BUT compatibility library for API Developing Grid systems As opposed to just GridServices Integration of new DRM into system Sun Grid Engine

16. © OMII 1:Basic Services Services to meet the needs of stakeholders Service Provider: I have something to share Users: I want to use these shared resources Functional: Data & Application execution Running jobs using pre-installed applications Movement of input and output data files Management: Account and Resources Must have an account with a service provider Or delegated access to someone else’s account

17. © OMII 1: Architecture database of accounts resources applications resources computation data storage applications Web Services Accounting Resource Mgmt Data Staging Job Submission Client Application Admin Application Management (Browser) Application WS Security Tomcat & Axis

18. © OMII 1: Stack WS-Security AXIS Happy Axis TOMCAT Static Webpage Acct Mgmt Servlet Resource Mgmt Servlet Account Allocation Data Job TestService ExampleService Application USER PBAC

19. © OMII 1: Summary Robust and straightforward deployment on supported platforms Applications need to be installed on the machine Does what it says on the tin What it does it does well

20. © gLite Early releases have been deployed OK Suggested deployment requires ~6 machines Package install OK (but gHeavy!) Configuration complex Evaluation on hold

21. © Summary Complete UDDI Registry Condor Finishing GridSystems GT4 OMII 1 Underway GridMP Distributed visualisation (RAVE) gLite (hibernating) CROWN Reports will go on the ETF website when complete. Feed into NGS deployment decisions